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Simplifying (x + 4) * 3 + -1(x + -3) * 3 = 343 Reorder the terms: (4 + x) * 3 + -1(x + -3) * 3 = 343 Reorder the terms for easier multiplication: 3(4 + x) + -1(x + -3) * 3 = 343 (4 * 3 + x * 3) + -1(x + -3) * 3 = 343 (12 + 3x) + -1(x + -3) * 3 = 343 Reorder the terms: 12 + 3x + -1(-3 + x) * 3 = 343 Reorder the terms for easier multiplication: 12 + 3x + -1 * 3(-3 + x) = 343 Multiply -1 * 3 12 + 3x + -3(-3 + x) = 343 12 + 3x + (-3 * -3 + x * -3) = 343 12 + 3x + (9 + -3x) = 343 Reorder the terms: 12 + 9 + 3x + -3x = 343 Combine like terms: 12 + 9 = 21 21 + 3x + -3x = 343 Combine like terms: 3x + -3x = 0 21 + 0 = 343 21 = 343 Solving 21 = 343 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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